Locking safety-pin.



K. G. DIETERCH.

LGGKING SAFETY PIN.

APPLICATlON FILEDDEG.5,1O7.

A Patented Dec. 1, 1914.

2 SHBBTSSHBBT 1.

WITNESSES lNVENTOR @ai z'af BY mm @QM l/a r 212 VATTORNEY G. DIETERICH.

Patented Dec. 1914.

2 SHEBTSF-SHBET 2.

' at the city of New York,

' gether just rin sans rie-ranas ernten..

KARL G. ninrnnrcnfor New' Yorin.' N. Y.

manine earner-,Priv 7 Specification of Letters Patent.

application filed-December 5', i907. ,semi No. realen To all afkomz't may concern My invention relates generally to fastening devices, and the same has for its object more particularly to provideaA neat, simple, etlicientand reliable safetypin, wherein the point end of the pin may be securely locked within its cap or guard. i

Further, said invention has for its objectl to provide a safety pin wherein the coperating locking parts may be'guided into proper engagement with each other.`

F urther, said invention has for its'objecc to provide a safety pin which ,is so constructed that the cooperating vlocking parts will enter intolocking 'engagement evenY though said .coperating parts may be slightly out of register when brought toprior to theI lockingof said parts together. I*

Further, said invention has for its object to provide a safety pin which is so con'- 'striicted that the locking means cannot wear .out or become brokenby continued use or when subjected to strain or tension.

Further said invention has for its object to provide .alsaf'ety pin which is vso'coii- Vstructed that the recessed p ortion in the pin will not 'produce a hole. in the-fabric'of` larger diameter than the body ofthe pin when the same is'passed through said fabric.

`To the attainment of the aforesaid objects and ends my invention consists in the novel .details ofconstruction, and in the combina.

tion, connection and arrangement of. parts hereinafter more fully described and then pointed out inthe claims.

In the accompanying drawings, forming part ofthis specilication, wherein like nuinerals of reference indicate like parts,

-Figure l is a side view illustrating one form of safety pin constructed according to and embodying my said invention, the said pin being shown open in full lines'and .locked to its closed position in dotted lines.; Fig. 2 is a longitudinal section taken' on the line 2*.2 of Fig. 1; Fig. 3' is an enlarged'deta-il transverse ysection taken en the line 3'-3 of Fig. 4; Fig. -lis a partial sideview also en.

y partly in section,

' projections are staggered.

adapted to receive the I7. In said sideplates4 or members 20 2O are provided inwardljhextending inclined,

lower edges.

f Patenten nee..4 i, raie.'

larged, showing the cap portion in section,

and the pin in position and locked' within the cap; Fig. is a ldetail bottom view greatly enlarged, showingthe point end or' the pin; Fig. 6 ,is a side view thereof; Fig. 7 isa section taken on 4the lii'ie 7a? of lFigi 5,' Fig. 8- is a top view greatly enlarged and the pin' locked in position within the cap; Fig. Q'is a section of the 'cap taken on the line 9, 9'of Fig. -'l;I1`ig. l0 is 'a partial bottoni view of Vthe vcap showing a portion of -the pin; Figzvll is-a side view showing a niodiied forni oil: pin, on which the tapering. l are arranged `ertically in the cap, and Fig.' 'l2 is a detail longitudinal section showing av further vmodification adapted,

for ve'ry small pins in Iwhich thefprojections In said drawings l5 denotes the pin as a whole formed of wire and comprising a body portion 16, a pin 17., and anlintegraly spring I18 formed yat ythe junction 'of said bodyfporti'on 16 and spring-17. l l 'L The free end of the body portion 16 is rounded and upon said rounded end is secured a cap 19 formed of asingle piece of sheet metal partly Aconformed to said rounds ed end -and having an'integral guide 20 and parallel side plates or membersQG 2O point end of the pin tapering projections 2l 2' which are arranged with their smal-ler ends a upper-y inost:"`and their broader lower ends converrino toward each' other at or near thel lower edge of the cap 19. The projections 21, 21 are preferably arranged opposite to Heach other near the open end ofA said cap l9 in order that their rounded ta-pering'edges shall form a 'substanti ally ,ls/shaped groove or recess to receive the point end of the' Apin 17 The pin member 17 is provided at the op'- posite sides of its tapering. portion' or. point end with elongated, longitudinal recesses 22 22 which converge toward each other at the lower or underside of the pin 1T thus providing a. greater' surface 'upon' theupper sideof the pin intermediate the upper edges of said elongated recesses-2l 2l than at their The'- said elongated recesses' are so' constructed and arranged that when showing the point end of essentially oft a single piecel icc the point/.end 'of the pin is'intiinduced into the cap, and in position above the upper or smaller ends of the inwardly tapering projections 21, Q1 the said tapering projections will serve to guide the elongated longitudinal recesses 9:2 22 'in the pin 17 downwardly into the cap to the point Where said elongated recesses 22.22 in the pin point will conform substantially to the bases of said' .tapering projections 21 21 in the cap and be engaged thereby throughout their entire length in order to hold the point firmly wedged Within the cap. -v

By malringthe recesses 22 22 inthe pin 17 elongated provision is made for slight variations which occasionally occur inthe coiling of the body portion 16 to produce the spring 18 and thus insure the end o the pin being drawn into' engagement with said projections 21, .21 when the point is brought into position Within sa'd cap and above the upper ends of said projections. Then the pin 1T is properlylocked within thecap 19 and the recesses '2 2 therein engaged by the tapering projections 21, :21 of the cap and the pin as a whole subjected to strain or tension it will have the effect to bow the pin i7 and in so doing hold said projections 21, :7.1 'and recesses 20, Q() properly locked together. y

Vin the modification shown at Fig. 11', the pin 25 is constructed essentially as above described, except that the cap 26 is provided `Vith oppositely 'arranged projections 27 at right angles to the longitudinal laxis of the pin as a whole.

At Fig. 12 is shown a further modificaf.

tion which is adapted for use in connection with very small pins'made of Wire or small gage, and in order to render the locking means eective the pin 30 is provided in its point end with staggered projections 31, 31 which are adapted to engage correspondingly staggered projections 3Q, 32 on the cap 33. i

lalavi'infi; thus described my invention, what I claim and desire to secure by Letters Patent is:

1.. A locking safety pin comprising a body portion, a cap secured thereon, a forwardly inclined, inwardly-extending projection on aid cap, and a Ipin extending from said body portion adapted to be held in wedging `said Acap with their small ends uppermost,-

and av pin adapted for engagement with said tapering projections, substantially as specied 4. A locking safety pin comprising a body portion.y a cap secured thereto, inwardlyextending tapering projections having their small ends upperniost'and their broader adapted to be engaged by said tapering projections adjacent to their broader ends, sub` stantiallwfY as specified.

5, A locking safety pin comprising a body portion, a cap secured' thereto having side members and inclined tapering projections lower .ids arranged lonvitudinall of lsaid b D i pin converging toward each other, and ay pin arranged on the opposite sides of said sidemembers, haring their. smaller ends uppermost and their broader lower ends converging toward each other, and a pin having recesses therein conforming substantially to said tapering projections and .adapted to be held `in wedging engagement therewith, substantially as specified.'

Signed at the .city of New York, in the county and State of New York,'this second day of December, nineteen hundred and seven.

KARL G. DIETERCH.

Witnesses CONRAD A. DmTnRicH, A. R. ANGUs 

